IMC Chicago Portfolio holdings
IMC-Chicago, a key arm of IMC Trading founded in 1989 by Rob Defares and René Schelvis in Amsterdam, is a proprietary trading firm and market maker headquartered in Chicago since opening its first overseas office there in 2000. Employing over 650 of IMC’s 1,600+ global workforce, it operates at the heart of North America’s financial hub, trading equities, options, futures, and other derivatives on major exchanges like the Chicago Mercantile Exchange (CME) and Chicago Board Options Exchange (CBOE). Known for its technology-driven approach, IMC-Chicago leverages advanced algorithms and low-latency systems to provide liquidity across more than 100 global venues, evolving from a trading outfit with strong tech to a tech company that trades. Under CEO Rob Defares, the firm emphasizes innovation, quantitative strategies, and a collaborative culture, making it a powerhouse in the U.S. derivatives market.
Top Buys
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR Dow Jones Industrial Average ETF Trust
DIA
|
+$568M |
| 2 |
Amazon
AMZN
|
+$341M |
| 3 |
iShares MSCI South Korea ETF
EWY
|
+$278M |
| 4 |
Apple
AAPL
|
+$239M |
| 5 |
TSMC
TSM
|
+$215M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$316M |
| 2 |
Tesla
TSLA
|
+$253M |
| 3 |
Micron Technology
MU
|
+$178M |
| 4 |
iShares Bitcoin Trust
IBIT
|
+$176M |
| 5 |
SNDK
Sandisk
SNDK
|
+$159M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Miscellaneous | 97.94% |
| 2 | Technology | 0.92% |
| 3 | Consumer Discretionary | 0.31% |
| 4 | Financials | 0.17% |
| 5 | Communication Services | 0.16% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
4026
CALL
Revolve Group
RVLV
$1.52B
| $868K | ﹤0.01% |
+37,900
| New | +$838K |
|
4027
iShares US Industrials ETF
IYJ
$1.88B
| $867K | ﹤0.01% |
5,204
+3,095
| +147% | +$487K |
|
4028
CALL
Matsons
MATX
$6.75B
| $865K | ﹤0.01% |
4,500
+2,400
| +114% | +$437K |
|
4029
AES
AES
$10.6B
| $865K | ﹤0.01% |
58,997
-39,635
| -40% | -$576K |
|
4030
PUT
Gates Industrial Corp
GTES
$6.57B
| $864K | ﹤0.01% |
+30,900
| New | +$794K |
|
4031
PUT
Expeditors International
EXPD
$24.5B
| $864K | ﹤0.01% |
5,300
-3,100
| -37% | -$479K |
|
4032
CALL
SPS Commerce
SPSC
$2.99B
| $863K | ﹤0.01% |
15,100
+1,800
| +14% | +$99.4K |
|
4033
CALL
Archrock
AROC
$5.73B
| $863K | ﹤0.01% |
21,200
+11,500
| +119% | +$423K |
|
4034
Invesco DB US Dollar Index Bullish Fund
UUP
$307M
| $863K | ﹤0.01% |
30,366
-284,358
| -90% | -$7.89M |
|
4035
PUT
RB Global
RBA
$15.5B
| $862K | ﹤0.01% |
7,400
+4,700
| +174% | +$494K |
|
4036
IPG Photonics
IPGP
$3.32B
| $861K | ﹤0.01% |
7,341
-5,268
| -42% | -$605K |
|
4037
CALL
Direxion Daily Mid Cap Bull 3X ETF
MIDU
$69.4M
| $861K | ﹤0.01% |
+11,500
| New | +$754K |
|
4038
PUT
Flowserve
FLS
$9.74B
| $860K | ﹤0.01% |
11,600
-9,300
| -44% | -$707K |
|
4039
CALL
Ginkgo Bioworks
DNA
$468M
| $860K | ﹤0.01% |
86,800
+42,000
| +94% | +$351K |
|
4040
PUT
Host Hotels & Resorts
HST
$15.1B
| $858K | ﹤0.01% |
36,200
-6,000
| -14% | -$134K |
|
4041
CALL
PROG Holdings
PRG
$1.56B
| $858K | ﹤0.01% |
+18,400
| New | +$642K |
|
|
JKS
4042
CALL
JinkoSolar
JKS
$627M
| $857K | ﹤0.01% |
51,000
+2,400
| +5% | +$52.6K |
|
|
HIMX
4043
PUT
Himax Technologies
HIMX
$2.39B
| $856K | ﹤0.01% |
55,800
-141,000
| -72% | -$2.19M |
|
4044
CALL
Nordic American Tanker
NAT
$1.54B
| $855K | ﹤0.01% |
154,400
+87,800
| +132% | +$497K |
|
4045
PUT
Eagle Materials
EXP
$5.97B
| $855K | ﹤0.01% |
3,800
-900
| -19% | -$188K |
|
4046
Remitly
RELY
$5.54B
| $855K | ﹤0.01% |
38,151
-28,380
| -43% | -$582K |
|
4047
CALL
Portillo's
PTLO
$321M
| $854K | ﹤0.01% |
180,200
-50,800
| -22% | -$246K |
|
4048
PUT
Harmonic Inc
HLIT
$1.28B
| $854K | ﹤0.01% |
+52,300
| New | +$667K |
|
4049
CALL
NewAmsterdam Pharma
NAMS
$3.04B
| $854K | ﹤0.01% |
25,200
+16,600
| +193% | +$547K |
|
4050
Ultragenyx Pharmaceutical
RARE
$1.51B
| $853K | ﹤0.01% |
25,535
+13,616
| +114% | +$338K |
|
Similar funds
IMC Chicago's Q2 2026 Portfolio in Review
As of Q2 2026, IMC Chicago held 6,955 positions worth $419B, up 50% from $278B the previous quarter. Its ten largest holdings account for 34% of the portfolio.
IMC Chicago's Q2 2026 filing shows 1,282 new, 3,251 increased, 1,751 reduced and 653 closed positions. Its largest new stake was Microsoft: 303,034 shares worth $113M. The largest sale was State Street SPDR S&P 500 ETF Trust, an estimated $316M.
By sector, the portfolio is most concentrated in Miscellaneous at 98% of assets, down from 98% a quarter earlier, followed by Technology and Consumer Discretionary.
- IMC Chicago's largest Q2 2026 buy was Microsoft: 303,034 shares worth $113M.
- IMC Chicago added most to State Street SPDR Dow Jones Industrial Average ETF Trust in Q2 2026, an estimated $568M increase.
- IMC Chicago's biggest Q2 2026 reduction was Tesla, cutting an estimated $253M.
- IMC Chicago fully exited State Street SPDR S&P 500 ETF Trust in Q2 2026, selling an estimated $316M.
- IMC Chicago's ten largest holdings make up 34% of its $419B portfolio in Q2 2026.
- IMC Chicago opened 1,282 new positions and closed 653 in Q2 2026.
- IMC Chicago's portfolio value rose 50% quarter-over-quarter to $419B.
Based on IMC Chicago's 13F filing for Q2 2026, filed 6 Aug 2026.